Hadoop General Interview Questions
Questions Answers Views Company eMail

What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?

268

Which directory does hadoop install to?

272

Why use hadoop?

244

What are the actions followed by hadoop?

248

What kind of hardware is best for hadoop?

231

Where are hadoop’s configuration files located and list them?

228

How jobtracker assign tasks to the tasktracker?

238

What are the functionalities of jobtracer?

237

What does rack awareness mean?

224

What the information segments utilized by hadoop are?

233

Clarify what a task tracker is in hadoop?

235

How ordering in hdfs is finished?

239

Clarify what is sequence file input format?

275

How job tracker schedules an assignment?

231

Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?

257


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Un-Answered Questions { Hadoop General }

What is the hadoop-core configuration?

264


What is the purpose of context object?

235


Are there any special requirements for namenode?

240


What is the use of cloudera?

230


Mention how many inputsplits is made by a hadoop framework?

301






What is the job tracker role in hadoop?

236


Can I set the number of reducers to zero?

231


What does the high availability of a name-node means?

228


List some use cases where classification machine learning algorithms can be used.

238


Explain some important features of hadoop?

255


Explain how jobtracker schedules a task?

260


What happens when two clients try to access the same file in the hdfs?

279


Does hadoop follows the unix pattern?

229


Can you explain speculative execution?

233


If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?

431